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Biology, 05.12.2020 03:50 dylalove4963

Part B: Determine trait variation in the species for this modeling activity, assume that your species reproduces sexually. This assumption implies that it inherits half of its mother and half from its father. Recall that in sexual reproduction, individuals inherit homologous pairs of chromosomes one fr the father and one from the mother. This arrangement allows for two alleles for every gene. The alleles can be dominant or recessive. You will model three three traits controlled by three gene types on homologous chromosomes. Your Gene's should have these patterns of inheritance:
Trait 1: Simple dominant/recessive inheritance
Example: In pea plants, YY and Yy genotypes will yield green pea pods.
Trait 2: Co-dominance occurs when there's more than one dominant allele and they Express equally.
Example: Human blood type is co-dominant. Ia (type a blood), IB (type B) and I (O blood) are controlled by A and B dominant alleles. If a person inherits A and B alleles, they'll have AB blood. O blood is caused by two recessive alleles.
Trait 3: Incomplete dominance
Incomplete dominance occurs when there is more than one dominant gene, but the expression of both genes creates a blending of traits.
Example: RR=red flowers, WW= white flower, but RW=pink flowers.
Come up with your three traits and the possible inherited phenotypes.
To get started, think about the traits your species needs to help it survive in its environment. Come up with variations of these traits. (variations that wont affect the organisms survival), and beneficial traits (variations that would give the organism a better chance for survival). You can even include harmful genes or genes that could cause genetic diseases. Fill in the chart with the traits you chose and the possible inherited phenotypes.

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